Multiple choice

Which of the following statements is/are correct? A. Carborundum is used as a refractory material. B. Blast furnace is used for the smelting of lead ore. C. Calamine and zincite are the ores of zinc.

  1. Only A

  2. Only A and B

  3. Only B and C

  4. Only A and C

  5. A, B and C
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The substances which are capable of withstanding very high temperatures without melting or becoming soft are called refractory materials like- SiC (carborundum), Al2O3 and SiO2. Blast furnace is used for the smelting of iron, copper and lead ores. Calamine (ZnCO3) and zincite (ZnO) are the ores of zinc.

Keep practicing — related questions